

Custom Pleated Air Filter Cardboard Frame Built for Extended Service Life
Engineered for extended change-out cycles and superior durability, this industrial-grade cardboard pre air filter utilizes premium glass fiber or advanced synthetic blends to achieve uniform dust loading throughout the filter media. It features a rigid metal-mesh backing that guarantees uniform pleat spacing for ideal aerodynamic airflow, while its eco-friendly construction uses 100% recyclable and incinerable materials to support sustainable modern facilities. This reliable disposable HVAC panel filter lineup provides dependable intake protection and exceptional air filtration performance under strict factory quality control protocols.
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Product Key Features
Extended Service Life: Utilizes a high-capacity media configuration that allows for greater dust accumulation, resulting in fewer filter change-outs and lower maintenance costs.
Optimal Aerodynamic Airflow: Engineered with precision-spaced radial pleats that ensure even air distribution, low static pressure, and maximum airflow consistency.
Sustainable & Eco-Friendly: Constructed entirely without heavy plastic parts, allowing the spent air filter to be easily crushed or completely incinerated for green-building compliance.

Material & Craftsmanship
Premium Glass Fiber & Synthetic Blends: Features advanced multi-layered filter media options designed to achieve precise MERV ratings (MERV 8, 11, 13) for different air quality standards.
Rigid Metal-Mesh Backing: Laminated with a rust-resistant expanded metal grid that provides strong mechanical support to the pleats, preventing collapse under high air volume.
Industrial Die-Cut Construction: Employs a heavy-duty, double-wall die-cut frame with overlapping corners to provide exceptional structural strength against bending or twisting.
Applications
Automotive Paint Spray Booths: Widely used as a reliable pre-filter to capture paint overspray and large dust particles, protecting downstream exhaust filtration systems.
Electronics & Semiconductor Factories: Serves as the critical first-stage intake protection in cleanroom makeup air units (MAUs) before air passes through secondary filters.
Data Centers & Server Rooms: Provides dependable, continuous air filtration to eliminate airborne dust that could compromise sensitive electronic equipment and servers.

Competitive Comparison
| Feature Details | Chuqi Heavy-Duty B2B Filter | Standard Cardboard Filters |
| Service Lifespan | Engineered with high-capacity premium media blends; extends change-out cycles by 30% to 50%. | Uses low-grade thin media; clogs rapidly, requiring frequent and costly replacements. |
| Pleat Spacing | Laminated with a rigid expanded metal grid backing; guarantees uniform aerodynamic airflow. | No metal backing or weak paper lines; pleats flutter, bunch up, and restrict system ventilation. |
| Frame Strength | Double-wall die-cut frame with overlapping corners; zero twisting under high face velocity. | Single-wall flimsy cardboard; easily buckles or warps under industrial static pressure. |
| B2B Customization | Offers precise American Nominal-to-Actual conversion and full OEM custom dimensioning. | Restricted to standard stock sizes; unable to modify dimensions for non-standard industrial housings. |
Specifications
| Parameter Category | Specification Item | Technical Data & Industrial Standards |
|---|---|---|
| Basic Structure | Frame Material | High Wet-Strength Beverage Board (Moisture-Resistant Heavy Cardboard) |
| Filter Media | Premium Graded-Density Synthetic Fiber / Glass Fiber Blends | |
| Reinforcement | Double-Side Galvanized Steel Wire Mesh / Expanded Metal Grid | |
| Adhesive Bonding | 100% Perimeter Sealed with Water-Resistant Polyurethane Glue | |
| Available Thickness | 1 Inch (1″) / 2 Inch (2″) / 4 Inch (4″) | |
| Performance & Efficiency | MERV 8 Efficiency Rating | Particle Size 3.0–10.0 µm ≥ 70% | Initial Resistance: ≈ 0.20–0.25 in.w.g. (50–62 Pa) |
| MERV 11 Efficiency Rating | Particle Size 1.0–3.0 µm ≥ 65% | Initial Resistance: ≈ 0.30–0.35 in.w.g. (75–87 Pa) | |
| MERV 13 Efficiency Rating | Particle Size 0.3–1.0 µm ≥ 50% | Initial Resistance: ≈ 0.40–0.45 in.w.g. (100–112 Pa) | |
| Operation Limits | Max. Temp / Humidity | ≤ 180°F (82°C) | 100% RH (Relative Humidity) Max. |
| Final Resistance | Recommended replacement at 1.0 in.w.g. (250 Pa) | |
| Standard Dimensions | 16 x 20 x 1″ (Nominal) | Actual Size: 15.5 x 19.5 x 0.75″ (394 x 495 x 19 mm) | Airflow: 1100 CFM |
| 16 x 25 x 1″ (Nominal) | Actual Size: 15.5 x 24.5 x 0.75″ (394 x 622 x 19 mm) | Airflow: 1400 CFM | |
| 20 x 20 x 1″ (Nominal) | Actual Size: 19.5 x 19.5 x 0.75″ (495 x 495 x 19 mm) | Airflow: 1400 CFM | |
| 24 x 24 x 2″ (Nominal) | Actual Size: 23.38 x 23.38 x 1.75″ (594 x 594 x 44 mm) | Airflow: 2000 CFM | |
| Customization & Info | OEM/ODM Capabilities | Full support for custom actual sizes, non-standard thickness, private labeling/branding. |
| Environmental Disposal | 100% Recyclable & Incinerable options available for sustainable green building standards. |
As a data-driven, customer-centric global B2B supplier, Chuqi New Materials excels in converting complex technical blueprints into high-performance filtration realities. We offer unparalleled factory customization capabilities, allowing large-volume wholesale buyers to tailor everything from multi-layered graded-density media blends to personalized edge branding and private labeling. Our premium eco-friendly materials support 100% incinerable disposal configurations, perfectly aligning with modern green building and sustainable manufacturing initiatives. Choosing Chuqi as your strategic OEM/ODM partner means securing competitive factory-direct margins, scalable container-level production, and an extended product service life that drastically reduces change-out cycles and waste disposal costs for automotive, electronics, and pharmaceutical giants worldwide.

Frequently Asked Questions
Q1: How does your factory achieve a longer service life compared to standard cardboard pre-filters?
A: We utilize advanced multi-layered glass fiber or premium synthetic blends that feature graded-density depth-loading technology. This allows the filter media to trap larger dust particles on the surface while capturing finer particles deep inside, drastically increasing dust-holding capacity and extending the lifespan.
Q2: What are your factory’s exact capabilities for custom-sized industrial filters?|
A: As an experienced global air filtration manufacturer, we specialize in custom engineering. Our technical team handles precise American Nominal-to-Actual size conversions, non-standard outer dimensions, unique frame thicknesses, and custom private labeling to seamlessly fit any specialized industrial housing.
Q3: Can these filters be safely incinerated or recycled to meet green building standards?
A: Yes. We offer 100% eco-friendly and incinerable material configurations. By choosing our sustainable cardboard frame options without heavy plastic components, spent filters can be easily crushed or fully incinerated, making them completely compliant with international green building waste disposal standards.
Q4: For large-volume B2B wholesale orders, what are your production capacities and lead times?
A: Our factory runs automated high-speed production lines optimized for heavy industrial bulk supply. We offer highly competitive factory-direct pricing and flexible production scheduling for large container orders, ensuring stable lead times and reliable supply chain support for global distributors.
Q5: In which specific industrial applications is this long-life pre-filter most recommended?
A: This series is ideal as a heavy-duty disposable HVAC panel filter to provide critical intake protection. It is widely trusted for high-demand environments including automotive paint spray booths, electronics and semiconductor cleanrooms, data centers, and pharmaceutical manufacturing plants.




